Clutch.



No. 699,461. Patented May 6, I902.

I E. DYSTERUD.

CLUTCH.

(Application filed. Mmv 29, 1901.)

(No Model.)

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WITNESSES: INVENTOI? W) Ema? .fljale rad v ATTORNEYS Unrrnn dramasParana @rrtcn.

EMIL DYSTERUD, OF MONTEREY, MEXICO.

CLUTCH.

SPECIFICATION forming part of Letters Patent No. 699,461, dated May 6,1902.

Application filed March 29, 1901. Serial, No. 53,478- (No model.)

To (LZZ whom it may concern.-

Be it known that I, EMIL DYSTERUD, a citizen of the United States, and aresident of Monterey, in the State of Nuevo Leon, Republic of Mexico,have invented a new and Improved Clutch, of which the following is afull, clear, and exact description.

This invention relates to a clutch designed especially for use inconnection with alternating-current electric motors, but which is alsouseful in other connections, as will be apparent. In applying theinvention to an electric motor it comprises a clutch member carried by arotary part of the motor and controlled by centrifugal force, thisclutch member working with a second member fast on the shaft which is tobe driven. \Vhen the rotor is revolving at low speed, the shaft is notdriven therefrom; but when the rotor reaches a high speed thecentrifugal force attending such revolution causes the clutch members tobe engaged and the shaft is driven. An example of the use of myinvention in connection with an electric motor may be seen in the patentto Elihu Thomson, No. 664,190, December 18, 1900.

This specification is a specific description 0 one form of theinvention, while the claim is a definition of the actual scope thereof.

Reference is to be had to the accompanying drawings, formingapart ofthis specification, in whichsimilar characters of reference indicatecorresponding parts in both views.

Figurel is a side elevation of the invention, and Fig. 2 is a section ontheline 2 2 of Fig. 1.

a indicates the rotary portion of the electric motor or any otherrevolubly-driven ele-- ment. This is mounted by spokes a and a box aloosely on the shaft 1), which is to be driven from the element a.

0 indicates a disk which is fastened to the shaft 1) and preferablyformed with a peripheral groove, with the walls of which are engagedclutch members (1. These clutch members are connected to the element athrough the medium of link-joints d and levers (1 the later beingfulcrumed to the rotor a. The links d are connected with the short armof the levers C1 and the longer arms of the levers extend inward towardthe hub c and are formed with weighted portions 61 which normally lieclose against the hub a and are held yieldingly in such position bysprings d".

The parts a, a, and a being loose on the shaft, when rotating movementis imparted to the part a the levers d and clutch members dare carriedaround with it. As the rotatin g member a gathers velocity the weightedends 07 of the levers d are thrown out-- ward and the clutch members clare forced into engagement with the clutch-disk 0, thus fastening therotor or member a on the shaft and causing the shaft to be driven.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The combination of a rotary shaft, a driving memberarranged thereon and comprising an outer part or rim, ahub fittedloosely on the shaft and spokes connecting the outer part and hubtogether, a lever fulcrumed on the outer part of the driving member andcar- EMIL DYSTERUD.

Witnesses:

PHILIP CARROLL, PHILIP C. HANNA.

